/Engine/Source/Runtime/Datasmith/DatasmithCore/Public/IDatasmithSceneElements.h
Adds a new material override to the Actor Element
void AddMaterialOverride ( const [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [IDatasmithMaterialIDElement](API\Runtime\DatasmithCore\IDatasmithMaterialIDElement) > & Material )